An aberration detection device which can detect a spherical aberration sensitively by separating a light beam appropriately so as to enlarge a difference in the positions where the respective separated light beams have the minimum spot diameters, and thus to enlarge a deviation amount of the focus positions of the separated light beams, is provided. The dielectric separation region permits the elimination of a guard ring in at least one dimension. The user interface further provides a visual representation of the promotional product having the decoration applied thereto and according to the decoration manufacturing process. These results indicate the difficulties encountered in the modulation of ascorbate level in the animal.